Save page input to a file

Hi,
I have a task where a user should be able to save the nput on a page to a file.
The page contains a form and a tabular form.
The user must also have the possibility to upload the saved files and save the corresponding data to the database.
This operation is needed for possible shortcomings in internet connection and it is used in laptops.
I wonder what would be the most simple way to do this.
I thought that maybe it could be done so that the whole page is copied as HTML and saved to a file. Then on upload the corresponding input values of the objects are copied to the page and the page is then submitted. But how to copy the values from a blob?
And I guess there is a better way to do this ?
Any tips or comments would be really helpfull, because I must get this ready soon.
Tiina

Hmmm.. so your users want to start modifying the report in the apex page itself, but want to continue modifying the same even after the network connection is lost ?
I was thinking of asking them to download the excel first,modify it(the excel) and then upload it later.
If this is the case , irrespective of what you do in apex the values entered are going to be staying in the user's browser. Of course you can use a tabular form based on a collection and use ajax to autosave the data once in a while but even thats not going to be very effective.
Saving the HTML would probably be the only way (if they don't want to upload an excel) . As I mentioned earlier , upload that HTML file to an XML column and extract the values from there. You can also combine the approaches , by having a Javascript on the page which dumps all the data into a textarea in a comma separated structure which the users can save into a csv file,open it in excel modify i and then upload it too.
Irrespective of the method used, you have a slight problem (which you have overlooked). Once the connection is lost, Pagination request from the tabular form do not work anymore, so users can only work on one page(the one which is loaded), same is the case with downloading the report to excel even that needs a request to the server(so the javascript method I mentioned would have this problem again). Saving the complete report together in an HTML page(using a large pagination value) or modifying an excel would probably be the only way then.

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